Periodic solutions of nonlinear wave equations for asymptotically full measure sets of frequencies
Massimiliano Berti
Università degli Studi di Napoli Federico II, ItalyPietro Baldi
Università degli Studi di Napoli Federico II, Italy

Abstract
We prove existence and multiplicity of small amplitude periodic solutions of completely resonant nonlinear wave equations with Dirichlet boundary conditions for asymptotically full measure sets of frequencies, extending the results of \cite{BB2} for new types of nonlinearities.
Cite this article
Massimiliano Berti, Pietro Baldi, Periodic solutions of nonlinear wave equations for asymptotically full measure sets of frequencies. Atti Accad. Naz. Lincei Cl. Sci. Fis. Mat. Natur. 17 (2006), no. 3, pp. 257–277
DOI 10.4171/RLM/468